1. Departamento de Microbiología, Facultad de Biología Universidad de Sevilla Seville E41012 Spain
2. Department of Plant and Microbial Biology University of Zurich Zurich Switzerland
3. Department of Biology, Plant–Microbe Interactions Utrecht University Utrecht 3584 CH The Netherlands
4. Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Universidad Nacional de San Martín (IIB‐UNSAM‐CONICET) Buenos Aires Argentina
5. Molecular Microbiology Department John Innes Centre Norwich UK
6. School of Biological Sciences University of East Anglia Norwich UK